There have already been a number of high profile lawsuits by what have come to be known in some circles as patent trolls; companies whose sole revenue source is patent royalties - often from questionable patents. Not surprisingly these companies are some of the most vocal opponents of the patent reform bills being considered in the U.S. Congress. However, the result of this case could have serious implications for internet commerce as one of the key components of online shopping services could suddenly become much more expensive to operate.
Many ecommerce sites that offer suggestions to customers will be watching with a lot of interest If Netflix doesn't put up a fight in court there will almost certainly be more suits filed.
You can find all the filings in this case, including the patent documents, at Justia.com.